A 1,200 kg car moving with 45 mph collides head on with another car with the same mass and moving in the same direction

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answerhappygod
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A 1,200 kg car moving with 45 mph collides head on with another car with the same mass and moving in the same direction

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A 1,200 kg car moving with 45 mph collides head on with anothercar with the same mass and moving in the same direction with 15mph. Assuming that after collision the cars stick to each other,move with the same speed, and 55% of the initial kinetic energy islost due to heat and friction, what is the velocity of the two carsafter collision? Consider 1 mile = 1.609 km.
Answers:
a. 10.06 m/s
b. 11.12 m/s
c. 13.37 m/s
d. 15.38 m/s
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